A prophet is a spokesman; one sent from God to man to make known the divine will. In this sense Moses and all inspired men were prophets. But Christ was the personal "Word of God" incarnate, he who had eternally been "in the bosom of the Father," and "known the Father"; and consequently as Mediatorial Prophet is that original fountain of revelation of which all other prophets are the streams. He is the Prophet of all prophets, the Teacher of all teachers.
Hodge, A.A. A Commentary on The Westminster Confession of Faith With Scripture Proofs (Kindle Locations 1840-1844)